Mamba problems

[GreekDiver]

sorry for going through the hassle of taking the pics. Everything looks fine to me. Maybe there isnt much air in the gun? How hard is it to load ? What size gun is it?

Just make sure you push that oring on the spear into the sealing kit in the muzzle before you load the gun. Im sure you know that but sometimes the obvious can be the answer.

 

[Mongrel454]

No hassles at all mate, The gun is an Seac Asso 115. Im not sure how to define how hard it is too load... If im sitting down on the boat with the gun between my legs on the floor i can grab the spear near the muzzle and load it by hand without using the loader. When im in the water and loading it the proper way it isnt easy or hard.
I was told by someone else that the standard air pump that comes with the asso guns isnt much good at all and i should get myself a Cyrano pump. A friend i just met has a spare one so im gonna try that on the weekend.

 

[GreekDiver]

No hassles at all mate, The gun is an Seac Asso 115. Im not sure how to define how hard it is too load... If im sitting down on the boat with the gun between my legs on the floor i can grab the spear near the muzzle and load it by hand without using the loader. When im in the water and loading it the proper way it isnt easy or hard.
I was told by someone else that the standard air pump that comes with the asso guns isnt much good at all and i should get myself a Cyrano pump. A friend i just met has a spare one so im gonna try that on the weekend.

'
sounds like you have no air in it. You shouldnt be able to move the spear in the gun without a loader. When you get your manometro, load it to 26 bar and tell me if its easy rofl You better have your technique down or you wont be able to load it.

All hand pumps are the same. I fill mine with a scuba tank and takes like 10 secs

 

[Mongrel454]

Ok thx mate, Im glad it isnt an actual problem with the gun setup

Gotta start pumping now

 

[Old Man Dave]

I'm not an expert on or user of mamba's in the same way as Greekdiver but I have a mamba 90 and my brother has a 90 and a 115. If you can push the spear into the gun without a loader even an inch or 2 then you have seriously low air pressure. I've found the pumps work okay but you need hundreds of strokes (400+) to charge the gun. The 90 is hard to load although there is a bit of a knack to it and you get used to it. The 115 is a real bitch but if you persevier then the results are a mega powerful, fast and accurate gun equivalent in performance to a big multi band.

My twopence worth.

Dave

 

[Mongrel454]

Cheers Dave

When i used my Asso pump i pumped it 470+ times and at that point the pump would not allow any more air into the gun, it would just release the pressure somehow.
And after all that pumping my son could load the gun(well not really but you get my point). I went to the beach and tried it and boy was it bad. So then i went to my local dive shop who pumped it up more for me, to what he thought was 20 bar.
But obviously it aint enough. I am getting a Cyrano pump on the weekend and i will give that a shot.
A Manometer is a definate thing i need to get in the near future.

Thanks again Greekdiver and Dave appreciate your help

 

[Old Man Dave]

We bought a pressure guage nad adaptors for the hand pump between a few mamba owners. Works well. Cost about 30£'s (30 GB pounds or 40 euro's) direct from Maori sub. However we didn't get a scuba tank adaptor partly because there are different scuba adaptors and we couldn't seem to explain which one to maorisub. Did find that the number of pumps was about right in terms of pressure.

Sounds like your pump is no good.

Dave

 

[petar_dj]

looks like the pressure in you asso is really low and that is the reason for poor performance. i own an older model mares pneumatic, which is 110 cm long, but without the loader I cannot push the spear in more than 15 cm, and i am 194 cm tall and 7 years of fitness training behind me.

when pumping any pneumatic, the first ~100 strokes should be easy. as you go on, you reach the point, when you feel that all the air in the pump is compressed it the final 2 cm of the pump, and just wont go into the gun.
at that point, just press the pump handle harder and force the air into the gun and continue to do so until you reach the desired number of strokes. if the air is going anywhere else rather than into the gun cylinder (escaping at the pump-gun connection or by the pump handle), then the pump O ring or sealing is faulty and should be replaced.
hope it helps

 

[Cammo]

Hey Jamie,

I'm finally signed up...now I need convincing about the mamba kit on my cyrano 1100.....all I'm reading is about problems..

Who out there can really prove something about mamba power vs standard cyrano or other pneumatic power? :martial

PS Greekdiver...nice vids!

 

[foxfish]

If you keep reading all the pages of info on db relating the mamba system, you will find mamba kitted gun are not all about power - you get less recoil, more power & a smoother shot.
No mamba user needs to prove anything

 

[Mongrel454]

Gday Cammo glad you made it here

Well if you keep reading mate you will see that mamba is definatelt the way to go
Although ive been having problems, i think it was all to do with lack of pressure in the gun. I went out on Sunday and i am alot happier with the performance now. I think with a few more tweaks it will be great

If your not convinced mate pm Ninjagazz on extreme forums and he will tell you

 

[Cammo]

Ta Foxfish,

I thought everyone was just after more raw brutal power?:martial
A slightly quieter gun would be nice.
True there is some great info in the threads...I got stuck into it last night.

 

[GreekDiver]

Dont get a mamba. They are problems. I have 4 of them and i just suffer using them as you can tell in my videos.

 

[Cammo]

I can tell GreekDiverrofl, you are lucky to hit something:t, keep cranking out those vid's, they are good.

How do you really rate a mamba against say, a standard pnematic?! This is what I can't find!
Someone must have some measured evidence somewhere.....power increase, noise, recoil...maybe me and Mongrel will have to put them side by side?!
A lot of variables...line attaching system, shaft length, shaft diameter, we can match pressure with a gage...it could be interesting

 

[foxfish]

Cammo, I can see you are interested in buying a mamba system but I dont understand why you doubt he performance? There have been thousands bought & the only real problems stem from loading the kitted guns at high pressure. The system avoids the piston having to push a barrel full of water along with the spear, this means a much faster spear & less recoil. If the gun is not correctly loaded & water is allowed into the barrel then the shot will be next to useless, standard air guns have holes around the muzzle to eject the water from the barrel, a mamba does not.
As long as the mamba is loaded correctly & has 20+ATM it will easily out perform a standard airgun. You need to now exactly what pressure you have inside you gun so you will need a pressure gauge, order one when you buy the kit or the kitted gun.

 

[GreekDiver]

I can tell GreekDiverrofl, you are lucky to hit something:t, keep cranking out those vid's, they are good.

How do you really rate a mamba against say, a standard pnematic?! This is what I can't find!
Someone must have some measured evidence somewhere.....power increase, noise, recoil...maybe me and Mongrel will have to put them side by side?!
A lot of variables...line attaching system, shaft length, shaft diameter, we can match pressure with a gage...it could be interesting

Its day and night difference vs a standard pneumatic. Mamba guns are balanced better since there isn't any water inside. They aren't top heavy and extremely easy to maneuver even with the camera. You get a smaller gun with a lot more range.

Here are the real cons to mamba pneumatics.

Ordering them is a complete bitch. Enzo is the worst in customer service.

You have to learn how to repair them. I haven't replaced anything yet in my guns. I only put new fork oil once a year. Thats all. If an oring would to break, it costs pennies to fix! You just have to know how to take the gun apart. Its real easy when you do it a couple times. Its way cheaper to service a pneumatic than replacing bands. My guns shoot exactly the same with every time because i know how much air is inside. Bands are different as they degrade over time.

You have to buy a gauge to fill it up from a tank. The hand pump is a joke. It takes 10 secs with the tank and gauge.

The sealing kit needs to be machined out of aluminum if you plan on shooting lots of fish. It will never break if its aluminum. The plastic ones last but i prefer it to be bullet proof.

You have to find the right shaft size so the gun will be perfectly balanced. Example. The 115cm seac mamba shoots perfectly with 130cm shaft. The balance is real nice with that length.

Once you have all these things, the gun is pretty impressive.

 

[Cammo]

Thanks Foxfish and GreekDiver, :blackeye

Great responses....now THAT is what I'm talking about, some good information about why to really buy a mamba &/or kit, now I'm seriously interested!
I've always been a convert to standard pneumatics, in the face of many friends using rubber guns....rubbers start to degrade when they leave the rubber factory, you can see them breaking up in front of your face and too many tangles:head

A couple (ok, actually a lot) of questions that I haven't found answers to:

1. A mamba gun - is it best just to buy one of these or convert? I keep hearing issues of conversion problems.
2. Do mamba make their own gun from scratch or do you just choose the componetry you want it made from? Any advice on this?
3. Does the standard "mamba" gun come with the sealing kit from "machined aluminum" or plastic?
4. Any advice on choosing length of spear for a cyrano 1100 if a mamba kit is retrofitted to it?
5. How hard is to really load a longer spear with the extendable loader or is it best to just buy a gun a little shorter? (Mongrel-Jamie does have one of these so I could try it, I actually customised my cyrano spears a little shorter to make them easier to load)
6. Any advice on what size mamba is relatively easy to load for a guy 6'?
7. How long have mamba kits been around?
8. Does anyone have advice on the best shooting line set up? Slide ring? Drilled spear (I think some Mamba spears must be drilled?)
9. How do we get Diving Diva into spearfishing?:friday

Thanks in advance,
Cam

 

[sp9hzx]

Hi ,

In oryginal Mamba 90 I have 3 wraps of monoline.And usually 30 Atm.Dentex reel from Maori
with about 40m Kevlar.

 

[tromic]

Ok i recently installed a mamba kit on my seac asso 115.
Before installing the kit the gun had a bit of power, but since i was going on a trip i knew i needed some more.
But now the gun is pretty much crap, no power what so ever(well has some but its less than it was without the kit)

So my question is what could i have done wrong?
It is pumped to 20-22 bar so it has ample pressure.
My guess is maybe it isnt sealing and it lets water in, but i aint no expert
I installed the kit as per the design, but maybe i misinterptered something.



Dissapointed

You should check using the bathroom scale if there is 22 bars in the gun. If you put the gun at the scale and push the shaft the scale should show about 30 kgs (for 13 mm barrel)

 

[cousy]

Your problem might not be a lack of pressure in the gun especially since you say that it is hard to load. I believe what is happening is you are allowing the shaft to move forward slightly during the loading process. This would cause the oring to move away from the sealing surface allowing water to enter the barrel. If you are not loading the gun in one continuous motion water is probably entering the barrel.

I can think of a couple of solutions that might help. First try using the slider to tap the oring in place a couple of times and then wind your line up before you reload, this should help you to keep the floating oring seated during the loading process. If that does not work you could buy a Karamba slide assembly from Ramon. The Karamba slide has an internal oring in the slide instead of a floating one on the Mamba. This slide is a all metal one piece replacement for the Mamba system.